Plantronics Voyager™ 510SL Bluetooth® Headset System: Enjoy wireless freedom in the office or on the go with the Plantronics Voyager™ 510S Bluetooth® Headset System. This lightweight, versatile headset provides all-day wearing comfort and superior sound quality-and you can seamlessly switch between your office phone and voice-enabled Bluetooth mobile device at the touch of a button. Wherever, Whenever, Wireless. Simple to Use: Convenient One-Touch Control. Superior Comfort: Balanced, lightweight design. Intelligent: Smart technology knows which device you are using- enabling you to take calls from either device. Flexible: Folds for easy storage. Swivels for use on either ear. Superior Sound: Noise-canceling microphone. Convenient: Headset automatically charges when in the base. Ultimate Versatility: Now you only need one headset for all of your communication needs. Plantronics multipoint technology allows you to use you headset with your office phone, and your Bluetooth audio devices.